请推荐几款运算放大器能够直接驱动1000pF以上的负载电容,
其他的参数接近就行:
Vos:1000uV以下
Ib和Ios:1—1000nA
供电:正负18V
PSRR:大于100dB
GBWP:2-10MHz
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capacitive loads up to 100pF will cause little change in the phase characteristics of the amplifiers and are therefore allowable. Capacitive loads greater than 10pF must be isolated from the output, if the gain value is less than 2. The most straightforward way to do this is to put a resistor (its value ≥ 20Ω ) in series with the output. The resistor will also prevent unnecessary power dissipation if the output is accidentally shorted.
我要的是直接驱动1000pF,这个10pF就要建议加隔离电阻了
OPAx192可以驱动1000pF的电容,不管是Ib,Vos,供电等也都符合你要求。